Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
With the onset of September, Helsa's climate undergoes a slight change as the average high-temperature moves from a moderately hot 23.4°C (74.1°F) in August to a comfortable 18.7°C (65.7°F). Helsa records a steady low-temperature average of 9.1°C (48.4°F) during September.Humidity
In Helsa, the average relative humidity in September is 79%.Rainfall
In Helsa, Germany, in September, during 13.3 rainfall days, 31mm (1.22") of precipitation is typically accumulated. In Helsa, during the entire year, the rain falls for 176.4 days and collects up to 463mm (18.23") of precipitation.Snowfall
June through September are months without snowfall.Daylight
In Helsa, the average length of the day in September is 12h and 38min.On the first day of the month, sunrise is at 06:35 and sunset at 20:07. On the last day of September, sunrise is at 07:21 and sunset at 19:01 CEST.
Sunshine
In Helsa, the average sunshine in September is 8.3h.UV index
The average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a regular UV index of 3 translates into these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Helsa in September?
What is the average humidity in September in Helsa?
How many days does it rain in September in Helsa?
When it does not snow in Helsa?
Does it snow in Helsa in September?
How many hours of daylight does Helsa have in September?
When is the sunrise / sunset in September in Helsa?
How long on average sun shines in September in Helsa?
How high is the UV index in September in Helsa?
Average temperature in September
Helsa, Germany
- Average high temperature in September: 18.7°C
The warmest months (with the highest average high temperature) are July and August (23.4°C).
The month with the lowest average high temperature is January (2.5°C).
- Average low temperature in September: 9.1°C
The month with the highest average low temperature is August (12.5°C).
The coldest month (with the lowest average low temperature) is January (-2.1°C).
Average pressure in September
Helsa, Germany
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is September (1017.7mbar).
The month with the lowest atmospheric pressure is November (1013.9mbar).
Average wind speed in September
Helsa, Germany
- Average wind speed in September: 8.6km/h
The windiest month (with the highest average wind speed) is December (12.2km/h).
The calmest month (with the lowest average wind speed) is August (8.4km/h).
Average humidity in September
Helsa, Germany
- Average humidity in September: 79%
The months with the highest relative humidity are January and December (90%).
The month with the lowest relative humidity is August (73%).
Average rainfall in September
Helsa, Germany
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is June (51mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in September
Helsa, Germany
- Average rainfall days in September: 13.3 days
The months with the highest number of rainy days are June and July (17.8 days).
The month with the least rainy days is February (10.9 days).
Average snowfall in September
Helsa, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (79mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Helsa, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Helsa, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 30min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 8h and 2min
The month with the most sunshine is August (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 3h and 0min).
Average sunshine days in September
Helsa, Germany
- Average sunshine days in September: 13.4 days
The month with the most sunshine days is October (14.9 days).
The month with the least sunshine days is June (9 days).
Average UV index in September
Helsa, Germany
- Average UV index in September: 3
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in September
Helsa, Germany
- Average cloud cover in September: 44
The month with the most cloud cover is December (Cloud cover 71).
The month with the least cloud cover is August (Cloud cover 39).
Average visibility in September
Helsa, Germany
- Average visibility in September: 8km
The month with the highest visibility is August (9km).
The months with the lowest visibility are January, February, October, November and December (7km).
Helsa, Germany
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